Polyacrylamide(PAM) yog cov khoom siv hluavtaws nrog ntau yam kev siv, suav nrog kev kho dej. Nws feem ntau yog siv los ua flocculant thiab coagulant pab tshem tawm cov khib nyiab, turbidity thiab lwm yam impurities hauv dej. Thaum PAM tuaj yeem ua tau zoo hauv kev txhim kho cov txheej txheem kev kho dej, muaj teeb meem ib puag ncig thiab kev txiav txim siab cuam tshuam nrog nws qhov kev siv:
Toxicity thiab Health Kev txhawj xeeb: Polyacrylamide nws tus kheej feem ntau suav hais tias tsis muaj tshuaj lom. Txawm li cas los xij, monomeric acrylamide thiab qis molecular hnyav polyacrylamide siv hauv nws cov khoom tuaj yeem ua rau muaj tshuaj lom thiab raug cais raws li cov kab mob carcinogens. Txhawm rau txo qis kev pheej hmoo ntawm kev noj qab haus huv, cov tuam txhab feem ntau siv cov txheej txheem uas tawm ntawm cov acrylamide tsawg tsawg hauv cov khoom PAM kawg. Cov neeg siv yuav tsum tswj PAM nrog kev saib xyuas thiab ua raws li cov lus qhia kev nyab xeeb.
Environmental Persistence: Polyacrylamide tuaj yeem nyob hauv ib puag ncig, tshwj xeeb tshaj yog hauv av thiab sediments. Nyob rau tib lub sijhawm, qhov kev pheej hmoo no tuaj yeem ua rau PAM txuam nrog, cuam tshuam rau ecosystems thiab dej hauv dej. PAM tseem tuaj yeem thauj mus rau cov dej nyob ze los ntawm cov dej ntws los ntawm cov teb thiab cov chaw tsim kho, uas yuav ua rau muaj kev cuam tshuam ib puag ncig uas tsis xav tau.
Cov khoom degradation: Txawm tias PAM nws tus kheej yuav tsis muaj tshuaj lom heev, nws cov khoom degradation yuav cuam tshuam. Thaum PAM tawg nyob rau hauv ib puag ncig, nws tso tawm acrylamide thiab lwm yam khoom los ntawm cov khoom. Acrylamide yog lub npe hu ua neurotoxin thiab nws qhov muaj nyob hauv dej lossis av yuav ua rau muaj kev pheej hmoo rau cov dej hauv dej thiab txawm tias tib neeg yog tias nws paug cov dej haus.
Kev cuam tshuam rau cov dej hauv dej: Kev siv PAM hauv kev kho dej hloov cov tshuaj muaj pes tsawg leeg ntawm cov dej, uas yuav cuam tshuam rau cov dej hauv dej. Piv txwv li, ntxiv PAM tuaj yeem cuam tshuam rau cov khoom noj sib npaug hauv cov dej hauv lub cev, uas ua rau eutrophication (ntau ntxiv ntawm cov as-ham), teeb meem algal blooms, thiab hypoxia.
Kev Tswj Xyuas thiab Kev Saib Xyuas: Ntau qhov chaw txiav txim siab tswj kev siv PAM vim muaj kev txhawj xeeb txog lawv cov kev cuam tshuam ib puag ncig. Cov neeg siv ntawm PAM hauv daim ntawv thov kev kho dej tej zaum yuav raug rau cov kev taw qhia tshwj xeeb thiab tshaj tawm cov cai. Kev saib xyuas thiab tswj PAM concentration hauv cov dej khib nyiab yog qhov tseem ceeb heev rau kev tiv thaiv ib puag ncig.
Alternative Treatment: Lwm txoj kev kho dej thiab tshuaj lom neeg raug tshawb nrhiav los txo cov teeb meem ib puag ncig cuam tshuam nrog PAM. Cov kev xaiv no yog tsim los ua kom tiav tib lub hom phiaj kev kho dej thaum txo cov kev cuam tshuam ib puag ncig.
Hauv cov ntsiab lus, thaum polyacrylamide tuaj yeem ua tau zoo hauv kev siv dej kho mob, muaj qhov tseem ceeb ntawm ib puag ncig uas yuav tsum nco ntsoov. Cov neeg siv yuav tsum ua raws li cov kev coj ua zoo tshaj plaws rau kev tuav, siv thiab pov tseg PAM, thiab cov neeg tswj hwm yuav tsum tau saib xyuas thiab ntsuas nws cov kev cuam tshuam ib puag ncig kom ntseeg tau tias nws muaj kev nyab xeeb thiab siv lub luag haujlwm. Tsis tas li ntawd, kev tshawb fawb thiab kev txhim kho txuas ntxiv yog tsom mus rau kev nrhiav kev kho dej kom ruaj khov thiab zoo ib puag ncig.